Black Sesame Tāngyuán is a variation of the classic Tāngyuán, but with a delicious twist. The sticky rice balls are filled with a sweet black sesame paste, giving them a rich and nutty flavor. The process of making these rice balls is similar to the classic version, but with the addition of the filling. The black sesame paste is made by grinding roasted black sesame seeds with sugar. The filled rice balls are then cooked in boiling water or sweet syrup. The result is a delightful dessert with a unique taste and texture.